Stuart L. Schlackman

Stu Schlackman is known as The Relationship Selling Expert. After more than 20 years in corporate sales, Stu formed his own sales training firm to focus more directly on helping his clients achieve superior sales results.
Schlackman created the “Four People You Should Know” Personality Assessment that is used to help companies build high performance teams and increase sales by understanding how using personality styles is the key to success in building long-term client relationships. As Stu says, “it’s not how you sell, it’s how your customer buys.”
Stu’s tool helps you understand how the four styles make decisions, how they prefer to communicate, what they value, and what motivates them to action.
Stu has authored 6 books on sales, Don’t Just Stand There, Sell Something; Four People You Should Know, The Relationship Selling Secret, Leverage Your Strengths, The 180 Rule for The Art of Connecting and Sales Sagas. Each one shares important tips and tools to help you compete and win in business and life.
Schlackman holds a Mechanical Engineering degree from Rensselaer Polytechnic Institute and a Master of Business Administration from Kennedy Western University.
Highlights of Stu’s Service
• Board of Directors - Richardson Chamber of Commerce
• Adjunct Professor at University of Texas, Dallas for Professional Selling
• Three-term President of the National Speakers Association - North Texas Chapter
• Chair - Sales Professional Experts group of National Speakers Association
• Chapter Leadership Committee for the NSA’s national organization.
• Past-President of the Leadership Richardson Alumni Association.
In 2013, Stu received the Certified Speaking Professional (CSP) award from the National Speakers Association, their highest performance-based designation. He is presently on the National Speakers Association board of directors. He is in the Top 30 Global Gurus in Sales and has been ranked #6 in 2026.